Question Detail
Question
All of the following are methods to prevent corrosion except:
Correct Answer
Option D is the correct answer.
Detailed Explanation
Electroplating with a less active metal would create a galvanic cell where the more active metal (iron) would corrode preferentially if the coating is scratched. Cathodic protection involves coating with a more active metal like zinc (galvanizing).
Hint
Cathodic protection uses a sacrificial anode that is more easily oxidized.